Ventilative vehicle seat back

ABSTRACT

A ventilative vehicle seat back of the present invention includes a main body, at least one air channel, plural air holes, and a deflector. The main body has a reclining surface, two side surfaces and a first connecting portion. One of the side surfaces is formed with at least one inlet, and the first connecting portion is located at the side surface which is formed with the inlet. The air channel is formed on the main body and communicates with the inlet. The air holes are formed on the reclining surface and communicate with the air channel. The deflector has a second connecting portion. The second connecting portion is connected to the first connecting portion. Thereby, the ventilative vehicle seat back of the present invention provides better ventilation so that a user doesn&#39;t feel hot and stuffy when reclining on the seat back.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a vehicle seat back, and morespecifically to a ventilative vehicle seat back.

2. Description of the Prior Art

To enhance the comfort of conventional vehicle seat backs, a vehicleseat back is developed to have a foam layer and a leather recliningsurface. Said vehicle seat back is comfortable to be reclined, but itfails to cool the reclining surface when a user reclines on said vehicleseat back.

To solve the above-mentioned problem, vehicle seat backs as shown inTWM261396 and TWM373838 were brought into the market. Said vehicle seatbacks can solve the heat problem occurred when a user's back touching avehicle seat back, but said patents either require an additional powersupply to drive a fan so as to generate an airflow, or need to beequipped with an extra wind pipe in a vehicle. Consequently, the hot orcool air can be lead into an air channel which is disposed on thevehicle seat backs. However, said patents have the followingdisadvantages:

1) It requires multiple devices such as fan, motor, and the like togenerate airflow, so that the structure of said vehicle seat backsbecomes more complicated.

2) Correspondingly, it needs to install additional devices to generatehot or cool air at the said seat backs. Therefore, users have to pay forthe installation fee of the devices, or the fee may be transferred tothe selling price of the vehicle. In this way, said vehicle seat backsare not competitive in price, and further fails to be affordable for allusers.

3) An additional wind pipe, fan or other components connected to saidseat backs will reduce the in-vehicle space and further have a badeffect on the design integrity of a vehicle.

4) Said patents rely on additional electric power to drive a fan. If anadditional battery is used for power supply, it needs extra charge forbattery and creates a recycling problem. If a vehicle battery is usedfor power supply, it may disturb the stability of the voltage for otherdevices of the vehicle.

The present invention is, therefore, arisen to obviate or at leastmitigate the above mentioned disadvantages.

SUMMARY OF THE INVENTION

The main object of the present invention is to provide a ventilativevehicle seat back without power driven systems.

Another object of the present invention is to provide a ventilativevehicle seat back which is environmentally friendly.

Another object of the present invention is to provide a ventilativevehicle seat back which has a simple structure without additional costsfor installation.

To achieve the above and other objects, a ventilative vehicle seat backof the present invention includes a main body, at least one air channel,and a deflector. The main body has a reclining surface, two sidesurfaces, and a first connecting portion. Plural air holes are formed onthe reclining surface. One of the side surfaces is formed with at leastone inlet, and the inlet communicates with the air channel of the mainbody. The deflector has a second connecting portion. The secondconnecting portion is connected to the first connecting portion, so thatthe deflector can deflect the cool air, which is blown from a vehicleair conditioner, to the inlet of the side surface. Then, the cool air inthe air channel is expelled from the air holes so as to cool down theheat accumulated when a user's back is touching the seat back.Similarly, the deflector can deflect the warm air, which is blown fromthe vehicle air conditioner, to the inlet of the side surface so as towarm up the user's back in the cold seasons.

The present invention will become more obvious from the followingdescription when taken in connection with the accompanying drawings,which show, for purpose of illustrations only, the preferredembodiment(s) in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a stereogram in accordance with a preferred embodiment of thepresent invention, wherein the deflector opens.

FIG. 2 is a stereogram in accordance with a preferred embodiment of thepresent invention, wherein the deflector closes and covers on the inlet.

FIG. 3 is a side sectional view in accordance with a preferredembodiment of the present invention.

FIG. 4 is a stereogram in accordance with another preferred embodimentof the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIG. 1 to FIG. 3 for a preferred embodiment of thepresent invention. A ventilative vehicle seat back of the embodimentincludes a main body 1. The main body 1 has a support portion 2, a foamlayer 3, a seat cover 4, and a deflector 5. The support portion 2 iscoated with the foam layer 3, and the support portion 2 is formed with afirst connecting portion. The seat cover 4 covers the foam layer 3. Saidmain body 1 further comprises two side surfaces 41, a reclining surface42 and a top surface 43. The reclining surface 42 is provided for beingreclined, and one of the side surfaces 41 which is away from a vehicledoor is formed with at least one inlet 44. The first connecting portionof the support portion 2 is located at the side surface which is formedwith the inlet 44.

Further, the foam layer 3 is formed with a flat room. Preferably, theflat room is divided into plural air channels 31 by plural L-shapedpartitions A. The air channels 31 communicate with the inlet 44. In thepresent embodiment, the inlet 44 extends from one end of the airchannels 31 so that the inlet 44 is formed in a shape like a flatgroove. The shape can provide a good deflecting effect.

The top surface 43 of the main body can be disposed with a head portion11 for a user's head to recline. The reclining surface 42 furthercomprises plural air holes 45 which communicate with the air channels.Preferably, the air holes 45 extend through the seat cover 4 and thefoam layer 3 with a diameter of at least 1 millimeter. Thereby, air,which is blown from a vehicle air conditioner, flows through pores ofthe foam layer 3 or the air holes 45. The air is then expelled from theair holes of the reclining surface, and is blown toward a user's backwhich reclines on the reclining surface 42.

Moreover, the top surface 43 of the main body 1 is formed with one ormore outlets 431. The outlet 431 communicates with another end of theair channels. Preferably, the main body 1 further comprises one or morelids 432. The quantity of the lids 432 is corresponding to the quantityof the outlets 431. The lid 432 can be detachably or pivotally fixed onone side of the outlet 431. Preferably, one end of the lid 432 ispivotally fixed near one side of the outlet 431, so that another end ofthe lid 432 can pivot and cover the outlet 431. When cool air contactsthe user's back, warm air on the seat back will then be circulated andexpelled through the outlet 431. Thereby, the cool air from the inlet 44is exchanged with the warm air which is accumulated from the user'sback. The warm air is then expelled from the outlet 431. The recliningsurface 42 touched by the user's back for a long time can be cooled downby the circulation of the cool air. In the cold seasons, the lid 432 canbe closed to cover on the outlet 431 so as to keep warm air in the airchannels 31 and the air holes 45. In this way, the user's back can bekept warm.

The deflector 5 is a rectangle plate which is corresponding to the inlet44. The deflector 5 has a second connecting portion. The secondconnecting portion is connected to the first connecting portion. Thesecond connecting portion is an axle, and the first connecting portionis an axial hole for the axle to pivotally connect thereto. Thereby, thedeflector 5 is disposed pivotally at one side of the inlet 44.Preferably, a deflecting slot 6 is defined between the deflector 5 andthe side surface 41. The inlet 44 is located at one side of thedeflecting slot 6 which is away from the reclining surface 42.Therefore, when air is blown from the air conditioner to backseats, theair is then lead to the inlet 44 by the deflector 6. The air then flowsthrough the air channels 31 and comes out from the air holes 45. In thisway, the cool air can be circulated inside of the vehicle seat back soas to avoid a hot and stuffy feeling when the user's back is recliningon the seat back.

In present embodiment, the deflector 5 is movable between a firstposition and a second position, so that the angle between the inlet 44and the deflector 5 can be changed by demand. Thereby, the amount ofcool air, which is lead into the inlet 44, can be adjusted. Preferably,the first connecting portion is connected pivotally to the secondconnecting portion, so that the second connecting portion is able topivot with respect to the first connecting portion about an axle.

Please refer to the FIG. 1. When users feel hot and stuffy about theirbacks, the users can move the deflector 5 to the first position wherethe deflector 5 is disposed at an angle of 90° with the inlet 41 and hasa better deflecting effect. By that means, the deflector 5 is disposedat a bigger angle with the inlet 41 so as to ventilate the vehicle seatback. When the user feels cold, the user can move the deflector 5 to thesecond position, as shown in FIG. 2, so that the deflector 5 closes theinlet 41 and prevents the air from flowing into the inlet 44.Consequently, the air conditioner has its original effect to moderatetemperature.

Please refer to the FIG. 4. In another embodiment, the first and thesecond connecting portion can be added with a position structure. One ofthe embodiments of the position structure is as disclosed as the FIG. 4.The first connecting portion is a bead 21, and the second connectingportion is a plurality of notches 51. The bead 21 can selectively abutagainst one of the notches 51. The bead moves from one of the notches 51to another when the deflector 5 is pivoted. Accordingly, the users canchange the angle between the deflector 5 and the inlet 41 by demand soas to accurately adjust the amount of the air which flows into the inlet41. The position structure can be a ratchet formed on a connect areabetween the first and the second connecting portion, so that thedeflector 5 can be located at multiple positions. In other possibleembodiments, the first connecting portion can be a first fabric surfaceextending from the seat cover 4. The second connection portion can be asecond fabric surface which covers the deflector 5. The connect areabetween the first and the second fabric surface is stitched up.

Accordingly, one of the side surfaces 41 of the vehicle seat back of thepresent invention is formed with at least one inlet 44. And a deflectorwhich can pivot is disposed nearby the inlet 44. The present inventionhas the following advantages:

1) It has a temperature adjustment effect on the vehicle seat backwithout additional electric power. Therefore, there's no problem aboutthe recycling of used battery and the voltage instability.

2) It includes a deflector, which is connected pivotally to the vehicleseat back, and a flat inlet, which is formed one a side surface of thevehicle seat back. In other words, it has a simple structure so that itdoesn't require additional expense or costly installation fee.

3) The deflector 5 is used for blocking cool or warm air from a vehicleair conditioner and leading the air to circulate in the vehicle seatback. In other words, it recycles the air from the conditioner withoutconsuming extra energy, so it is environmentally friendly.

4) Correspondingly, the deflector 5, which is disposed on the sidesurface of the seat back, can be closed and become a part of the seatback without occupying any in-vehicle space. And it doesn't have a badeffect on the design integrity of a vehicle.

From the above mentioned, it's obvious that the ventilative vehicle seatback of the present invention can overcome the disadvantages of theprior art with its simple structure.

1. A ventilative vehicle seat back, comprising: a main body, having a reclining surface, two side surfaces, and a first connecting portion, the reclining surface adapted to be reclined, at least one inlet being formed on one of the side surfaces, the first connecting portion located on the side surface which is formed with the inlet; at least one air channel, formed in the main body, the air channel communicating with the inlet; plural air holes, formed on the reclining surface, the air holes communicating with the air channel; a deflector, having a second connecting portion, and the second connecting portion connected to the first connecting portion.
 2. The ventilative vehicle seat back of claim 1, wherein the deflector is movable between a first position and a second position so as to adjust an amount of air deflected into the inlet by the deflector.
 3. The ventilative vehicle seat back of claim 2, wherein the first connecting portion is pivotally connected to the second connecting portion, so that the second connecting portion is able to pivot with respect to the first connecting portion about an axle.
 4. The ventilative vehicle seat back of claim 3, wherein the first connecting portion comprises a bead, the second connecting portion comprises plural notches, and the bead selectively abuts against one of the notches.
 5. The ventilative vehicle seat back of claim 1, wherein the main body comprises a top surface, the top surface is formed with at least one outlet, and the outlet communicates with the air channel.
 6. The ventilative vehicle seat back of claim 5, wherein the main body further comprises at least one lid, one end of the lid is pivotally fixed on the main body, and the lid is located at one side of the outlet.
 7. The ventilative vehicle seat back of claim 1, wherein the air channel is divided into plural L-shaped channels by plural partitions. 